Components of Intangible Assets and Their Estimated Useful Lives at Acquisition Date (Detail) (Avionics Interface Technologies, LLC, USD $) In Thousands, unless otherwise specified	0 Months Ended
	Oct. 31, 2014
Business Acquisition [Line Items]
Total intangible assets, estimated useful life, years	$ 9,080
Total intangible assets, estimated useful life, years	4 years 9 months 18 days
Customer Relationships
Business Acquisition [Line Items]
Total intangible assets, estimated useful life, years	5,630
Total intangible assets, estimated useful life, years	5 years
Developed technology
Business Acquisition [Line Items]
Total intangible assets, estimated useful life, years	2,580
Total intangible assets, estimated useful life, years	4 years 9 months 18 days
Trade Names
Business Acquisition [Line Items]
Total intangible assets, estimated useful life, years	380
Total intangible assets, estimated useful life, years	5 years
Non-compete agreement
Business Acquisition [Line Items]
Total intangible assets, estimated useful life, years	320
Total intangible assets, estimated useful life, years	4 years
Customer order backlog
Business Acquisition [Line Items]
Total intangible assets, estimated useful life, years	$ 170
Total intangible assets, estimated useful life, years	3 months 18 days